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Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Ohio - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Regulated electric $ 29,060 $ 27,787 $ 26,617
Regulated natural gas 2,870 2,252 2,152
Total operating revenues 32,237 30,357 29,060
Operating Expenses      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Total operating expenses 23,656 22,457 22,042
Gains on Sales of Other Assets and Other, net 45 26 52
Operating Income 8,626 7,926 7,070
Other Income and Expenses, net 720 652 711
Interest Expense 3,634 3,384 3,014
Income From Continuing Operations Before Income Taxes 5,712 5,194 4,767
Income Tax Expense From Continuing Operations 642 590 438
Comprehensive Income 4,938 4,758 2,975
Net Income 4,968 4,524 2,841
Fuel used in electric generation and purchased power      
Operating Expenses      
Cost of sales 8,058 9,206 9,086
Cost of natural gas      
Operating Expenses      
Cost of sales 983 565 593
Duke Energy Ohio      
Regulated electric 2,045 1,905 1,868
Regulated natural gas 752 640 639
Total operating revenues 2,797 2,545 2,507
Operating Expenses      
Operation, maintenance and other 490 485 478
Depreciation and amortization 466 403 367
Property and other taxes 432 400 364
Impairment of assets and other charges 0 0 3
Total operating expenses 2,213 1,968 1,983
Gains on Sales of Other Assets and Other, net 1 1 1
Operating Income 585 578 525
Other Income and Expenses, net 24 19 41
Interest Expense 203 192 169
Income From Continuing Operations Before Income Taxes 406 405 397
Income Tax Expense From Continuing Operations 68 64 63
Comprehensive Income 338 341 334
Net Income 338 341 334
Duke Energy Ohio | Fuel used in electric generation and purchased power      
Operating Expenses      
Cost of sales 626 538 608
Duke Energy Ohio | Cost of natural gas      
Operating Expenses      
Cost of sales $ 199 $ 142 $ 163